Mechanism for producing curved axial surface on rolls



H. A. GOOD April 18, 1933.

MECHANISM FOR PRODUCING CURVED AXIAL SURFACE ON ROLLS Filed May 29, 1931 4 Sheets-Sheet 1 INVENTOR Harper A.C,ood..

ATTORN EY April 18, 1933. H. A. GOOD 1,904,827

MECHANISM FOR PRODUCING CURVED AXIAL SURFACE ON ROLLS Filed May 29, 1931 4 Sheets-Sheet 2 INVENTOR Harfer A .Good..

ATTORNEY H. A. GOOD April 18, 1933.

H. A. GOOD MECHANISM FOR PRODUCING CURVED AXIAL SURFACE ON ROLLS,

April 18, 1933.

4 Sheets-Sheet 4 Filed May 29, 1931 INVENTOR Harper A. Good. BY 4 I g The (Slgi-jeet (if the invention is to provide a machine Ofthis type'whih willproauce as nearly as possible a. perfectly symmet callliriebn the snrfacebfth wqrkl Patented Apr; 18, 1 933 7 mum A. Goon .oF wme mm rENNSYI'VANIA; ess'iefiplt wAY NESBblw, IENNSYLVANIA; A V :QORBQMTIOM OF ,This invention ete-"w 1 611 g riding machines. and partieularly t' meeha-njism for produelng a? drowned tor" a eencaye ysu'rface A fupthei-i object is mprjoviae' a imeha o f' the parts, in any of the different po siti iens centric v 1 Astill fut-flier object. is tgb provid m n whefebythe mbvelnentin'jthe straight line; m I

t "i 'tyveen the-wheel base 'and'thelifting element; ,1

Fi ur tdwhich theylnaybe moved.

, still further object -1 s '60 provide wherebythe pointjof ema t b'etv'weel 1fthe wheel base and an Operating ecgp. "Further" objects and' advantages wi ll' become apparent as the descriptionflproceeds'. Referring to the accompanyingTdraiw ings; which are made a pm herein. and on" which 'slimilan reference'lcheracters indiate y The rinding wheel Psimilar'plarts, i Figui-el is tilt-ing' flle grinding Wheel b e,

Figur" 2', a;

ad"ust,ing said snb bal'se tdcentral position,

" 1 igure3,fan afrangeinent 'ofathe ldet ice ifor cqneaving a 'r'011,

iEi'gure 1"0i the j-aek for liitin the n Wheel baseteset'the eceentri'e, t

relaition thereto. 1

the crown oil-the 1 011 be "511011 tes wi'll a, reaf view 10 i mechanism for; U v on a sub-base 14, The snb-base 'l s fulcrnmed detall' v e'w of mechan1sm- 01" .dia-giaxnmatie i drive fiOirifEthe: I

u ed nf nd I I I?! grindingja'fcrown 1 911 F anflextens lem b10ck 2' the eons tructibn-fflis "shown 1n whmh i1" 0'0 Y e t Y. I i f j an n "9 anend elevatibil df ftlie'Wheel w base showing the tilting meehajnism in its on l'a roll it is' 'very 'neee ssa'ry that these zsur faces s ymmetricaliias pb'ssibl'ea- The crown '01 concave *s'u r fflcfi lmOreWer isheui beef such a;formes to compensabe ferdis tftidn "of the rollafdu'e to pressure I applied-1.

or due to ehan-ges temperature; i'isineexthex rolls which WilI JbeP-gIQund b maehines 'o this'kind arefrequently used n' rollingfhetgl steel th e te Inperature'ofthe i'ollieehamgml 1 very considerablyduringi-kite contact 'W-it 60.

the Work being rbllcl; zit is'; necessary the erly compensate fo rlchan'ges'qi temperatn The'matheinatical sine}:knirvesleemsibest'tq fulfil-1 the requirementsciiorf the fde's-inledr-w' crown and' concavity- I1 brder -tavig'rindi such aeurve lone, roll twerthin gsfare necen-i e sary.- 'First the line 01 point bf-eontdchbeh I jeetingarm 15 in the'form o'f a clarnp which the sereW is te centerathe wheel base afteyigy ,e setting the e'rowning mechanism Thescfiewa Whe 760 by means of a The diagrammatic sketch given in Figure- 6 shows the driving connection between a 10 motor 26 and the crown producing mechanism. The motor 26 drives a shaft 27 on the end of which is a worm 28 meshing with a Worm wheel 29. a shaft on the end of which is a p'inion30 which meshes with a pinion31jon ashaft 32." On the shaft 32 is a bevel gear. 38 meshing with .a bevel gear 34 on a shaft35. The

, shaft-35 has on its other end a bevel gear 36 emeshing with a bevel gear '37. 0.11 a shaft 38. 20

Aback lash mechanism 39 is provided intermediate the ends of the shaft 35. yThe end .OfytllG :shaft 38 earries'apinion 40 which" meshes' w ith a pinion 41 on shaft .42. The

-sxshaft 42 has a..'worm-.43 engaging with-a v 25 worm Wheel;44 carried by the shaft 45'upon which the 'crank. pin is mounted. The end of='the shaft 32 also has aworm '46 meshing with a worm wheel 47- on shaft 48 the other end-ofthe shaft 48..-has a'worm 49 mesh- 30 ofthe. grinding machine. I The operative connection just described willshowthat the grinding wheel is traversed past the work in ,zproper timed relation with the operation of of" the grinding mechanism.

of the shaft-54and the speed of the shaft 3.42 to; control the concaving and grinding 50 mechanism inrsponse'to rolls of varying length. In order to set the crowningmecha-' nism itis necessary to lift the weight of the P; wheel base ofi' theblock 18. This is accom- :.splished by means of a jack shownfin detail A bevel gear-.66:issecured-"to the nut 63 as,

meshes. with the beveled. gear;,66, the beveled gear 68 being carried on the end-of 'a. shaft 69. The shaft 69 maybe manually rotated by means of a wrench. inserted on the I squared end 71 of the shaft. The head 72 of The worm wheel 29 carries ing'with a rack .50 on thewheel carriage the grinding or, concaving mechanism. .A backlash element 51 may be provided in the The worni 55 is properly adjusted with relation to the posi-. tion of the, teeth on the worm wheel .44 to -.;;;take upJallbacklash during reverse rotation Gears 56, 57, 58, .59, 60 and 61 may be provided to give any desired relative variation "in the speed in Figure. 7 A bracket 62 is secured .on the. I carriage of the machine. 1. Within this .bracket-is'. mounted a nut;.63 which has a flange 64which rests upon ball bearings '65.

pin 67 .A bevel gear.-68 I work to grind acrown. or concave surface on a screw 74 seats against a pad 73 on the underside of the subrbase 14 so that the jack may be caused to support the weight of the grinding wheel base at which time the necessary adjustments for grinding or. concaving a roll may be made.v Keys 75 and 76 in bracket 62 prevent rotation. of the screw 74. From the description given above it will be seen thateach time the work carriage is traversed past the Work the shaft .20 iwill'be 75 rocked to move the'grinding wheel toward and from the'work in' accordance with the shape of the crown or concavity desired tobe formed onthe work. The rate of'tilting or lifting of the wheel. base :willbe in ac- 3 cordance with. harmonic motibn lsince the crank pin travels in the arclofa circle and the vertical movement of the pin is that of any'point-in the periphery of the .cirankpin/ Movement of the crank pin imparts linear m'otionto the base. r In Figure 3 the dotted circleArepresents theposit ionof the crank pin whenv grinding acylindr-ical roll "in which the sub-base is not tilted at allduring traverse of the work; carriage. Circle B in full linesshows' the position of the crank pin at the centergofthe roll-when concaving. -Dotted circlesC and: D show the positions at theendsof the roll.

Figure 4 showsthepositions of the crank pin forcrowning a; roll. Circle. X -in full lines isjthe central positionwhich indicates the positionat the center of the crown; Dotted circles Y andZ indicate the endp o sitions.- f 5 It will be obvious to those skillediinthe art that various changes may be made in; my device withoutdepartin'g from the spirit of the invention and therefore I do not limit. myself to what 'is-s-hownin the drawings and described in the specification, but only as indicated by the appended claims. 1-,

Having thus fully describedimy said in vention, what I claim as new and desii I secure by Letters Patent, is:

,1. A roll-grinding machine comprisingga bed, a wheel carriage traversable upon" the. bed, a wheel base tiltably. mounted uponthe carriage and carrying ,;-a grind-ingg =w'heel mounted approximately jabove 1 the f pivot; point, a 'crank carrying .angeccentric pin positioned adjacent; the under Side; of the rear of thefwheel base, aflblockg positioned againstsaid pin and the said'underside of the wheel base and guided for straight line. movement, and. means for operating thesaid T crank in. proper timed, relation; with thetraverse of the carriage .to impart straight 'line movementto hsaid ;bl0ck .t0. move ithe said grinding wheel toward and from the said thework said movement beingin accordance V the Work, substantially asset forth.

' ram bed ands wheel carriage traversableupon said bed, a wheel base mounted on saidcar:

riage said wheel base carrying a grinding wheel mounted thereon, means for tilting I faiidytliewliclSH p a v a,

' having 'grindingiwheel mounted thereon} j means "forf moving"fsaid wheel fiSupper-e towardfand hem the vorkj support com' prising anjeccentr'ic, V V said ecic'entric a'blockino nted remove in said-wheel "base comprising an eccentric, means for oscillating said eccentric, a block engageable with said eccentric, means for guiding said block for vertical movement,

said blockforming operative connection between thesald eccentric the said base,

whereby'oscillation ofthe eccentric will tilt porting a roll to be ground, a wheel car riage mounted on u said bed and travin a straight line and 'meansadjustably sethe base, and; means foradjus tingthe degree of eccentricity to produce a predetermined crown or concavity on the work asithe wheel base is tilted toward and from and moved axially of the work," substantially 1 as set as set forth; o a v 7. In .aroll grmding machine having a J v mounted on the bed"ancl-ftraversable one;

forth. p i 3. In a roll grinding machinehaving a bed and means mounted thereonfor-sup*- ersable axially of the roll 'to be ground, a wheel base tiltably mounted iupbn said wheel carriage, means fortilting said wheel base toward and from the work as the wheel carriage'cistraversed *axially of the work.

comprising an eccentric, means iorv oscil; lating said eccentric in timed 'relationwith movement of the wheel carriage, a-,block forming an operative connection between cured in said 'tiltable base forforming contact between the base and the, said block to provide adjustment of the tiltable base, sub-- stantially as set forth.

4. In a-roll grinding machine having a bed and means mounted thereon for sup porting a roll tojbe ground, a wheel can riage mounted on said bed and travers'able axially of the roll to'be ground, a wheel base tiltably mounted upon said wheel carriage, means for tilting said wheel base toward and "from the roll as; the wheel carriage is traversed axially of the roll comprising an eccentric, means for osc'illatingsaid eccentric in timed relation with movement of the wheel carriage, a block forming an op-- erative connection between said eccentric and said tiltable base, and means for guiding said block to causeit to move n a straight line, substantially as set forth.

5. A roll grinding machine having a bedand a wheelysupport, awheel base mounted on said support having a grinding wheel,

mounted thereon, means for moving {the wheel base comprislng an eccentric, a block mountedt o move in a straight line engage.-

ab'le with said eccentric nand forming the operative connection between the eccentric and the said; movable base,whereby qscilla: base, subtion ofthe eccentric will move the stantially as set forth. a p

betweenfthefecce ricz and 'tia'lly as, set forth. I r

ppertf saint wheel en for 1 oscillating a' straight line"engageable with said j-e'ccenper tric n rmin ;when-operative masses-n vable whel of the] ecfcen i and ifrom the bed, a wheel carriage and a work support relative to the other, thelwheelcarriage .be-

ing-mounted so 'asto'tilttoward and from t e: work support, means forQtiltingthe wheelcarr age' comprising a crank having wheel carriage andwith the'saidpin to form the operable connection betweenthe pinrand. I v

the carriage, said block" being guided for I; V 955 straight-line movement,. and; means for :ro-.

tating thecranktofimpart suchmovement p to the block, substantially asset forth. p 8. In afroll grinding'machine havingla bed and a wheel carriageqtraversable longitudinally of the bed and La -wheelbase movtrio win 'rii e"',the"-iwhee1-- eaport-toward a.

l p'pojrt, substantially an 'eccentricpima block engageable withthe 1 ably mounted on the said'carriage, means a for moving said wheelbase comprlsmg {a crank carryingan eccentric pin, a .b1o k;engageablewith'the wheelbase andwithfthe said pinto form theoperable connection be= I tween the pinandlthefbase, and means for i rotating the crank toimpart movement to the said block, said blockbeingguided for I" Straightdine movement on1y,' substantially as setforth.-' v 1- bed and a support for a rollfto be ground,

a wheel base movably mjo'unted upon said wheel carriage, means formmovm'g said;

'9. In a roll grinding machine havi a wheel carriage mo nt d th b 1 -traversableaxially of theroll to be ground, on V wheel base toward and fromthefroll] as i the wheel carriage is traversed axially a a a of the roll j compr s ngv an eccentric, J

means for oscillating said eccentric i-natimed relation with movement ofthe "wheel 'carriage,a blofck'formingthe'operativeconnection between said eccentriczand said movable base, and means forguidinglsaid block to" cause it to mo e in a straight line, "substan 10. In a roll" rindingimachinehaving a bed and means for supporting a ron tobe f ground, awheel carriage mounted songsaidf bed, means for imparting relative stravers-v thirty-one.

able ;movement between the work and the wheel carriage, a wheel base movably mounted upon said wheel carriage, means formoving said wheel base toward and from the Work in timed relation with. the

relative traverse between the wheel base and the work comprising an eccentric, means for osclllatmg said eccentrlc, a block forming v the operative connection between said eccentric and said movable base, and means for guiding said block to cause it to move in astraight lineto impart movement to the wheel base, substantially as set forth.

In witnesswhereof, I' have hereunto set my hand at Waynesboro, Pennsylvania, this 20th day of May, A. D. nineteen hundred and HARPER A. GOOD. 

